Making clickable icons through the display pipeline

[curtisw (Curtis Wensley)]

@michaelvollrath

Okay here is my attempt to that effect… It works except that the .ClientToWorld method appears to only work properly in Fullscreen mode (on Windows), if not in fullscreen the location is offset. I’ve noticed this happens with Eto.Forms as well in screen space calculations of the active viewport.

@dale or @curtisw do you know why fullscreen effects screen space coordinates? Is that a bug/known limitation or a function of the methods being used and user error on my part?

Hey @michaelvollrath,

Eto’s co-ordinates are in logical pixels which is not quite compatible when you have different DPIs, or even multiple screens (due to how Windows treats coordinates in system-dpi aware mode vs Eto’s multi-monitor dpi aware mode). To convert a point in physical pixels (e.g. what you get from the viewport, or windows forms APIs, etc), you can use Rhino.UI.EtoExtensions.ToEtoScreen(myPointOrRect). This API was added in Rhino 8.7, and directly calls Eto’s Eto.Forms.WpfHelpers.ToEtoScreen() in Eto.Wpf.dll.

There’s also a Rhino.UI.EtoExtensions.ToSystemDrawingScreen() to convert in the opposite direction, if needed.

Hope this helps!